Welcome to DU!
The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards.
Join the community:
Create a free account
Support DU (and get rid of ads!):
Become a Star Member
Latest Breaking News
General Discussion
The DU Lounge
All Forums
Issue Forums
Culture Forums
Alliance Forums
Region Forums
Support Forums
Help & Search
Quantum cryptography done on standard broadband fibre
The "uncrackable codes" made by exploiting the branch of physics called quantum mechanics have been sent down kilometres of standard broadband fibre.
This "quantum key distribution" has until now needed a dedicated fibre separate from that used to carry data.
But a new technique reported in Physical Review X shows how to unpick normal data streams from the much fainter, more delicate quantum signal.
It may see the current best encryption used in many businesses and even homes.
This "quantum key distribution" has until now needed a dedicated fibre separate from that used to carry data.
But a new technique reported in Physical Review X shows how to unpick normal data streams from the much fainter, more delicate quantum signal.
It may see the current best encryption used in many businesses and even homes.
http://www.bbc.co.uk/news/science-environment-13940928
